C Exercises: Reverse a given string using an inline function

C inline function: Exercise-10 with Solution

Write a C program to reverse a given string using an inline function.

Sample Solution:

C Code:

#include <stdio.h>

#include <string.h>
 // inline function to reverse a given string
inline void reverse_string(char * str) {
  int len = strlen(str);
  for (int i = 0; i < len / 2; i++) {
    char temp = str[i];
    str[i] = str[len - i - 1];
    str[len - i - 1] = temp;
  }
}
int main() {
  char str[100];
  printf("Input a string: ");
  fgets(str, 100, stdin);
  str[strcspn(str, "\n")] = '\0'; // remove newline character from input
  printf("Before reverse: %s\n", str);
  reverse_string(str);
  printf("After reverse: %s\n", str);
  return 0;
}

Sample Output:

Input a string: Wikipedia
Before reverse: Wikipedia
After reverse: aidepikiW

Input a string: C language
Before reverse: C language
After reverse: egaugnal C

Explanation:

In the above program, we define an inline function reverse_string() that takes a char pointer as input and reverses the string in its place. In the main() function, we get a string input from the user using the fgets() function. We remove the newline character from the input with strcspn() function. Use the printf() function to print the string before and after reversing, and return 0 to indicate the successful execution of the program.

Flowchart:

C Programming Code Editor:

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